westaway



' (No Model.) '3 Sheets-Sheet 1.

w. 0. WESTAWAY & L. W. BEARD.

WINDMILL. 7

No. 471,406. 4 Patented Mar. 22, 189.2.-

3 Sheets-Sheet 2.

(No Model.)

W. 0-, WESTAWAY' & L. W.'BEARD WINDMILL.

No. 471,406. I Patented Mar. 22,1892.

(No Model.) 3 Sheets-Sheet 3.

W. O. WEST-AWAY 8; L. W. BEARD.

WINDMILL.

Patent-ed Mar. 22, 1892.

' jwe nfa is.

NITED STATES PATENT OFFICE- \VALTER C. \VESTAWVAY AND LEWIS V. BEARD, OFDECORAH, IOWA, ASSIGN- ORS TO THE DECORAH IVINDMILL COMPANY, OF SAMEPLACE. I

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 471,406, dated March22, 1892. Application filed November 3, 1890. fierial No. 370,203. (Nomodel.)

To all whom it may concern.-

Be it known that We, WALTER C. I/VEST- AWAY and LEWIS W. BEARD, bothcitizens of the United States of America, residing at Decorah, in thecounty of Winneshiek and State of Iowa, have jointly invented certainnew and useful Improvements in WVindmills, of which the following is aspecification.

In the accompanying drawings, Figure l is to a top plan of themill-head; Fig. 2, aside elevation of the same in partial section; Fig.3, a sectional view showing the coiled spring and the bell-crank lever;and Fig. 4, a partial View in side elevation, with certain parts insection, showing the junction of the connecting-bar to the in ner end ofthe tail-vane device.

Our invention relates to means in solidhead windmills for resisting thelateral deflection of the wind-wheel out-of the wind with a forcedirectly proportionate to the extent of such deflection.

In the drawings, A indicates the mill-head; B, the wind-wheel shaftcarrying the windwheel B D, the vertical reciprocating rod, by which thepower'of the wind-wheel is communicated to the pump-bucket; H, thetailvane; H, the usual cord or chain to enable the attendant to throwthe wind-wheel out of the wind, and I a tube rigidly attached to the omill-head. Within the tube I is a coiled spring J, held in place by aflange t' at one end of the tube and a guiding-disk t", whic fits intothe tube at the other end. 7

K is a bell-crank lever fulcrumed to the 3 5 mill-head at 70. Its longarm is connected to the tail-vane by an articulated bar L, and its shortarm is articulated to a rod M, which extends into the tube I through thecenter of the coiled spring J therein, and is connected at the fartherend of said spring with the guiding-disk 2', which leans against the endof the spring and slides within the tube. When the wind-wheel deflectsout of the wind, the lever K is thereby caused to move in the di- '45rection indicated by the arrow, Fig. 1, compressing the spring J more orless, according to the extent to which the wind-wheel is laterallydeflected. Like all coiled springs its resistance increases directlywith the extent of its compression, and therefore in this instancedirectly in proportion to the extent of the lateral deflection ot theWind-wheel. The increase of resistance thus afiorded is not sufficientlyrapid for the best results, and therefore we supplement the action ofthe spring by, the variable action of a lever or system of levers toincrease the effect. With our construction it is not necessary toprovide a special lever or system of levers for this purpose, because wecan avail ourselves of the action of the tail-vane, the bar L, and thebell-crank lever K to accomplish the desired effect by simply arrangingsaid parts properly. To this end We connect the bar L and leverK'together at an angle not greater than a right angle and so arranged asto become the more acute the more the Wind-wheel is deflected out of thewind, thus progressively reducing the leverage of the wheel against theresisting-spring as such deflection increases. To further aid thisaction, if deemed necessary, the bar L may be connected to the tail-vaneat an angle less than a right angle and so arranged as to graduallyapproach a I right angle as the wheel deflects out of the wind, and thusincrease the opposing leverage of the tail-vane against such lateraldeflection. I/Vith the increasing resistance of the spring, thedecreasing leverage of the wheel against the spring, and the increasingleverage of the tail-vane against the Wheel the spring becomes moreprompt and effective as a regulator than even the old Weight of varyingresistance heretofore in general use.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a solid-head Windmill, the combina tion of the mill-head and thepivoted tailvane with the coiled spring J, the bell-crank o lever K,supported by the mill-head, and the bar L, connecting the long arm ofthe lever to the tail-vane, substantially as described.

2. In a solid-head windmill, the combination of the mill-head, thepivoted tail-vane, the coiled spring, the bell-crank lever, and the barL, connecting the long arm of the lever to the tail-vane, said lever andbar being so arranged that their angle to each other becomes more acutethe more the wind-wheel is I00 laterally deflected from its normalposition, substantially as set forth.

3. In a solid-head Windmill, the combination of the mill-head, thepivoted tail-vane, the coiled spring, the hell-crank lever, and the barL, connecting the long arm of the lever to the tail-vane, said bar andtail-vane being so arranged that their angle to each other is caused toapproach a right angle by the lateral deflection of the wind-Wheel fromits normal position, substantially as described.

4. In a solid-head windmill, the combination of the mill-head, thepivoted tail-vane, the coiled spring, the bell-crank lever, and

